TMUX136: Drain reverse current

Tommy Tzeng

Part Number: TMUX136

Hi Sir,

customer want to know differenr voltage drop V.S current in different Vgs for level shift( the curve in the figrue below), and there no similar curve in SPEC.

is there any information on this can be provide?

over 2 years ago

0 Kameron Hill over 2 years ago

TI__Mastermind 24430 points

Hello Tommy,

This device is a bidirectional device which means signals can pass from source to drain but can also be sent drain to source. Also this switch can be modeled as a resistor.

Are you looking for a level shifting device? If so I can definitely you help from that business unit.

Regards,

Kameron

0 Tommy Tzeng over 2 years ago in reply to Kameron Hill

Genius 5970 points

Hi Kameron,

this mean that there is no curve like the above photo available?

0 Clemens Ladisch over 2 years ago in reply to Tommy Tzeng

Guru 318700 points

The TMUX136 is a signal switch, i.e., it is not meant to pass large currents. It is characterized by its on-resistance (see section 6.5 and figure 6-1).

The voltage drop for the specified worst-case test conditions would be 13 Ω × 8 mA = 0.104 V, but in practice, your circuit is likely to use a lower current, and the actual resistance would be lower.

0 Kameron Hill over 2 years ago in reply to Tommy Tzeng

TI__Mastermind 24430 points

Hi Tommy,

I agree with Clemens on this. The Tmux136 is characterized by Ron vs voltage input so there is no curve like the one you provided. However the mux can be modeled as a resistor and the solution Clemens described is applicable.

Thanks and Regards,

Kameron

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TMUX136: Drain reverse current